
Tetrahedron Letters p. 4909 - 4912 (1980)
Update date:2022-08-03
Topics:
Brokatzky, Juergen
Eberbach, Wolfgang
Intramolecular cycloaddition reactions of carbonyl ylides with ester-activated C=C-bonds are studied.Whereas the annelated adducts 7/8 are formed in the case of 4a-c (n=1, 3, 5) as starting materials, thermolysis of 4d (n=10) leads predominantly to the bridged compound 9d.
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